Artificial sandy beaches often experience morphological adjustments post-construction due to wave action and sediment transport, leading to shoreline retreat, profile steepening, and width reduction. This study investigates the short-term to long-term evolution of an engineered sandy beach in Rizhao, China, based on five topographic surveys from 2019 to 2024. The MEPBay model, based on parabolic bay theory, was employed to sim...